Panasonic SA-AK22 Service Manual page 30

9.3. Cassette Mechanism Test (For error code H01, H02, H03, F01,
F02)
1. Press "TAPE, DECK 1/2" to select Deck 2.
2. Load a cassette tape with the erasure prevention tab, remove
from left side only and close the cassette holder.
3. Press "FAST FORWARD MEMORY" (Tape will be stop after 2
seconds)
4. Load a cassette tape with the erasure prevention tab, remove
from right side only and close the cassette holder.
5. Press "REVERSE FM MODE/BP" (Tape will be stop after 2
seconds)
6. Load a pre-recorded tape with both side record tabs intact and
close the cassette holder.